194 lines
6.3 KiB
Python
194 lines
6.3 KiB
Python
# Copyright (c) 2014 OpenStack Foundation.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import re
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import netaddr
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from oslo_log import log as logging
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from oslo_utils import uuidutils
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import six
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from neutron.agent.common import ovs_lib
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from neutron.agent.linux import ip_lib
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from neutron.agent.linux import ip_link_support
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from neutron.agent.linux import utils as agent_utils
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from neutron.common import utils
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from neutron.i18n import _LE
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from neutron.plugins.common import constants as const
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from neutron.plugins.ml2.drivers.openvswitch.agent.common \
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import constants as ovs_const
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LOG = logging.getLogger(__name__)
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MINIMUM_DNSMASQ_VERSION = 2.67
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def ovs_vxlan_supported(from_ip='192.0.2.1', to_ip='192.0.2.2'):
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name = "vxlantest-" + utils.get_random_string(6)
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with ovs_lib.OVSBridge(name) as br:
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port = br.add_tunnel_port(from_ip, to_ip, const.TYPE_VXLAN)
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return port != ovs_lib.INVALID_OFPORT
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def iproute2_vxlan_supported():
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ip = ip_lib.IPWrapper()
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name = "vxlantest-" + utils.get_random_string(4)
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port = ip.add_vxlan(name, 3000)
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ip.del_veth(name)
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return name == port.name
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def patch_supported():
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seed = utils.get_random_string(6)
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name = "patchtest-" + seed
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peer_name = "peertest0-" + seed
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patch_name = "peertest1-" + seed
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with ovs_lib.OVSBridge(name) as br:
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port = br.add_patch_port(patch_name, peer_name)
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return port != ovs_lib.INVALID_OFPORT
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def nova_notify_supported():
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try:
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import neutron.notifiers.nova # noqa since unused
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return True
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except ImportError:
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return False
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def ofctl_arg_supported(cmd, **kwargs):
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"""Verify if ovs-ofctl binary supports cmd with **kwargs.
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:param cmd: ovs-ofctl command to use for test.
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:param **kwargs: arguments to test with the command.
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:returns: a boolean if the supplied arguments are supported.
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"""
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br_name = 'br-test-%s' % utils.get_random_string(6)
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with ovs_lib.OVSBridge(br_name) as test_br:
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full_args = ["ovs-ofctl", cmd, test_br.br_name,
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ovs_lib._build_flow_expr_str(kwargs, cmd.split('-')[0])]
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try:
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agent_utils.execute(full_args, run_as_root=True)
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except RuntimeError as e:
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LOG.debug("Exception while checking supported feature via "
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"command %s. Exception: %s", full_args, e)
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return False
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except Exception:
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LOG.exception(_LE("Unexpected exception while checking supported"
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" feature via command: %s"), full_args)
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return False
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else:
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return True
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def arp_responder_supported():
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mac = netaddr.EUI('dead:1234:beef', dialect=netaddr.mac_unix)
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ip = netaddr.IPAddress('240.0.0.1')
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actions = ovs_const.ARP_RESPONDER_ACTIONS % {'mac': mac, 'ip': ip}
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return ofctl_arg_supported(cmd='add-flow',
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table=21,
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priority=1,
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proto='arp',
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dl_vlan=42,
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nw_dst='%s' % ip,
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actions=actions)
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def arp_header_match_supported():
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return ofctl_arg_supported(cmd='add-flow',
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table=24,
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priority=1,
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proto='arp',
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arp_op='0x2',
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arp_spa='1.1.1.1',
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actions="NORMAL")
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def vf_management_supported():
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try:
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vf_section = ip_link_support.IpLinkSupport.get_vf_mgmt_section()
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if not ip_link_support.IpLinkSupport.vf_mgmt_capability_supported(
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vf_section,
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ip_link_support.IpLinkConstants.IP_LINK_CAPABILITY_STATE):
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LOG.debug("ip link command does not support vf capability")
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return False
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except ip_link_support.UnsupportedIpLinkCommand:
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LOG.exception(_LE("Unexpected exception while checking supported "
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"ip link command"))
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return False
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return True
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def netns_read_requires_helper():
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ipw = ip_lib.IPWrapper()
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nsname = "netnsreadtest-" + uuidutils.generate_uuid()
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ipw.netns.add(nsname)
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try:
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# read without root_helper. if exists, not required.
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ipw_nohelp = ip_lib.IPWrapper()
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exists = ipw_nohelp.netns.exists(nsname)
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finally:
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ipw.netns.delete(nsname)
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return not exists
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def get_minimal_dnsmasq_version_supported():
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return MINIMUM_DNSMASQ_VERSION
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def dnsmasq_version_supported():
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try:
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cmd = ['dnsmasq', '--version']
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env = {'LC_ALL': 'C'}
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out = agent_utils.execute(cmd, addl_env=env)
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m = re.search(r"version (\d+\.\d+)", out)
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ver = float(m.group(1)) if m else 0
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if ver < MINIMUM_DNSMASQ_VERSION:
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return False
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except (OSError, RuntimeError, IndexError, ValueError) as e:
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LOG.debug("Exception while checking minimal dnsmasq version. "
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"Exception: %s", e)
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return False
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return True
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def ovsdb_native_supported():
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# Running the test should ensure we are configured for OVSDB native
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try:
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ovs = ovs_lib.BaseOVS()
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ovs.get_bridges()
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return True
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except ImportError as ex:
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LOG.error(_LE("Failed to import required modules. Ensure that the "
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"python-openvswitch package is installed. Error: %s"),
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ex)
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except Exception as ex:
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LOG.exception(six.text_type(ex))
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return False
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def ebtables_supported():
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try:
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cmd = ['ebtables', '--version']
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agent_utils.execute(cmd)
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return True
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except (OSError, RuntimeError, IndexError, ValueError) as e:
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LOG.debug("Exception while checking for installed ebtables. "
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"Exception: %s", e)
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return False
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